If you have a meter, the first thing we do is verify 240 volts at the dryer cord. If the voltage is a true 240, then unplug the dryer and proceed thusly:
Expose the handy tech sheet inside the top console. There are 4 screws on the back edge to remove in order to pop the control panel upward and toward you at the same motion. It walks you thru the diagnostics, including the resistance values for all the parts.